Selectively passive shieldable medical needle device
a needle device and passive technology, applied in the field of medical devices, can solve the problems of ineffective operation and easy wear of the structure, and achieve the effect of effective shielding of the needle and facilitating the activation of the release arrangemen
Active Publication Date: 2006-12-05
BECTON DICKINSON & CO
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- Abstract
- Description
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- Application Information
AI Technical Summary
Benefits of technology
The present invention is a safety needle system that includes a hub housing, a needle cannula, an elongated shield, a biasing element, and a latch mechanism. The shield is pivotably movable between a first position in which the needle cannula is exposed and a second position in which it is encompassed by the shield for protective shielding. The release arrangement includes a movable portion that causes the biasing element to bias the shield towards the second position, and a locking mechanism for maintaining the shield in the second position. The system also includes flexible wings for guiding insertion into a patient. The technical effect of the invention is to provide a safety needle system that can be passively activated during use and effectively shield the needle cannula after use.
Problems solved by technology
Pivoting of the pivotable housing to envelop and safely shield the used needle cannula, however, requires a two-handed operation by the user, and cannot be effectively accomplished until the device is completely removed from the patient due to the orientation of the pivotable housing with respect to the wings.
Since pivoting of the cap portion is based on a fold and is achieved through corresponding manual movement of the base with respect to the fold, the structure is prone to wear due to wearing of the fold.
Method used
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Embodiment Construction
[0028]FIGS. 1–10 generally illustrate a medical device according to the present invention. The medical device of the present invention generally includes a shieldable safety needle system adapted to enclose or surround a used needle cannula at the end of a medical procedure, such as a blood collection procedure. The medical device may be used as part of a fluid collection set used to collect blood or other fluids from the body of a human or animal. While described herein in terms of a blood collection set 10, it is noted that the medical device of the present invention including the safety needle system may be used with any medical device incorporating a needle, such as a syringe system, a double-ended phlebotomy needle, or the like. Preferably, the medical device includes a portion that is automatically pivotally biased to a safety, needle-enclosing position during normal use by a user of the medical device resulting in a passive activation of the safety features of the assembly, a...
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A pivotable shielding needle device for shielding used needle cannulas. The device generally includes a hub with a needle, and a shield pivotable between a first position exposing the needle and a second position encompassing the needle. A biasing element acts on the shield to pivotally bias it toward the second position, with the shield maintained in the first position through a latch mechanism extending between the shield and the hub. A release arrangement extends from the hub and is squeezable to cause movement of a movable member which releases the latch mechanism, thereby causing the shield to be pivotally biased to the shielding position. Accordingly, activation and shielding of the needle can be effectively accomplished during removal of the needle device from a patient, thereby providing for passive activation of the device during normal use.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a medical device for safe and convenient handling of used needle cannulas. More particularly, the present invention relates to a medical needle device that is adapted to automatically shield a needle cannula during normal use in a medical procedure.[0003]2. Description of Related Art[0004]Blood collection sets or intravenous (IV) infusion sets typically include a needle cannula having a proximal end, a distal end with a puncture tip, and a lumen extending therebetween. The proximal end of the needle cannula is mounted to a plastic hub having a central passage that communicates with the lumen in the needle cannula. A thin flexible thermoplastic tube is connected to the hub and communicates with the lumen in the needle cannula. The end of the plastic tube remote from the needle cannula may include a fixture for connecting the needle cannula to a separate medical device, such as a holder, a...
Claims
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IPC IPC(8): A61M5/32A61M25/06A61M31/00
CPCA61M5/3216A61M25/0631A61M25/0637A61M25/0612
Inventor CRAWFORD, JAMIESON
Owner BECTON DICKINSON & CO